Electromagnetically-operated plate or bar handling skid for rolling mills



ELEcTRoIvI/IGIIIEIICAILY oPEIIAIEn PLATE 0H BAR HANDLING SKID FoII ROLLING IvIILLs.

J. J. INGLIS.

FILED MAY II. I92I.

jfl

Dec. 26, 1922.

a r1" relic-eff f ra, TW,

JOSEPH JEFFREY INGLS, OF MQTHERNELL, SCOTLAND.

ELECTRIORAGNETICALLY-OPERTED PLATE OR BAR HANDLER@ SKID FOB ROLLING ELLLS.

Application led May 17, 1921.

To all whom, t may cof/tecra:

it known that l, Jessen 'Terreni' N- onis, a subject ot the King ot Great Britain and lrelaml, and a resident ot Motherwell, in the count;v oiI Lanark, `Fdcotland, have invented certain new and useful lmproi'ements in Electromagnetically Operated Plate or Handling `ikids tor Rolling lvlillsi et which the following' is the specification.

rlhe invention relates to skids for handling` 'plates and bars in connection with rolling; mills and et the kind in which there is a plate-receiving table ot magnetic material upon which the plate is held electromag'netically, the table beingw supported on skids or runners slidingl upon rails upon which the whole is supported.

The invention has Ytor its object to provide simple and eiiective means tor retaining the plate upon the table and tor preventing; its displacement oit the magnet when the plate is too hot to be magnetic, and has further for its object to provide improved means tor lessening, friction between the skids and the rails,

According to the invention there is provided at the end or ends or the skid table one or more vertically-movable plungers operatively connected to solenoids and controlled by wein-'lits or springs, so that they may be caused to project above the table into the path o'l3 the plate, or may be withdrawn clear or it.

ln order that the windings ot the solenoids operating these plungers-and which they may operate either directly or indirectly but preferably directlywmay not be affected by the magnetic i'ield of the main plate holding` table magnets, they are carried from the table on supports of nonmagnetic material, or which are magnetically insulated.

lt will be understood that the skid table is, in general, ot the type common in plate mills, and is capable ot beinpg' drawn along on rails. These tables receive the plates trom one of a train of live rollers in a plate mill (the rollers being' what is sometimes known as the roller table, upon which the plate is delivered from the rolls ot' the mill) and convey them to another live roller table. According to the present invention, each sled, which consists oi' a heavy metal plate supported on runners, may have means tor detent' Serial No, 470,462.

magnetizing the heavy plate or table so that the rolled plate delivered onto it held down by the magnets, The detent device prevents the rolled plate, when delivered onto the sled, 'from sliding' ofi the tar end of the table. Y

Similarly, and in order to preventundue friction between the skids proper and the rails, the skids are connected to the table by non-magnetic material, are 'magnetically insulated or are constructed ot non-magnetic material.

Part or a skid table showing the application thereto oilE an example ot the invention is shown on an accompanying sheet ot drawings, Figure l being,` a side elevation and Figure 2 a plan.

ln this example the solenoid coil A is supported in a cage B of' non-magnetic material which has lugs C by which it is supported between lugs D on one table and similar lugs (not shown) on the next table on bolts E.

The solenoid plunger F is connected to a yoke G carrying two plungers H, guided in apertures in the table and having dogpiec'es J at their upper ends which, engaging recesses in the upper tace of the table so positioned that the upper surfaces of the dog' pieces are below the surface of the table, support the weight of the whole. lWhen the solenoid coil is energized, 'tor example by the closing of the switch S in the solenoid circ-uit S', the yoke G and plungers H are raised, bringing the dog' pieces into the path of the plate as indicated in dotted lines in Figure 1.

ln order to prevent undue `friction between the skids K and the rails on which they slide, the skids are supported from the tablle in brackets L of non-magnetic materia The skid table M of magnetic material is energized by coils N in usual manner, but under some circumstances where a magnetized table is unnecessary the coils may be dispensed with.

'What claim is l. ln a skid table of the type described, a plate-supporting table, a movable detent normally below the supporting surface of the table, and electro-magnetic means Jfor raising the detent to plate-obstructing` position,

2 ln a skid table oi the type described, a

platesnpporting table, a movable deten platesupportng table oimagnetiomateria/l, 15

normally below she supporting; surface oli the table, and @lectin-magnetic means 'for raising the detent to liste-obstructing position7 togethei" with non-magnetic means 'foi' supaoi'ting the @lectin-magnet from the table.

3. In a skid table of the type described, a platesupporting table, a movable detent piercing the same but supported 'therefrom below its plate-supporting suriace, and electro-magnetic means for raising the detent 'to plete-obstructing position.

4. in a skid table of the type described, a

skids therefor and non-magnetic means oonn neeting the skids to the table.

5, En 2L skid table oil Ahe type ,lsciibed s, plate-supporting table of magnetic materiel, a magneically operated detent movable to plate-obstructing position, skids on which the table ris slmpoited, and non-magnetic 'means connecting said skids and detent-op- @rating electi'oma'gnet to the table.

In testimony whereof have signed my name to this speoilicstion.

JOSEPH JEFFREY INGLIS. 

